The 54 Teeth Chain Guard/Protection is an adjustable chain guard designed for bicycles with 54 teeth, such as the legendary Capriolo GT2. The guard helps keep your bike clean and safe from chain dirt. You will need 5 M3x10 screws and 5 M3 nuts for assembly. The 54 Teeth Chain Guard/Protection is easy to install and can be adapted to your bike's unique design and dimensions.